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e5f5113c21
* module/language/assembly.scm (byte-length): Don't match unused record slots. * module/language/tree-il.scm (tree-il->scheme, post-order!, pre-order!): Likewise. * module/language/tree-il/analyze.scm (analyze-lexicals): Likewise. * module/language/tree-il/compile-glil.scm (flatten): Likewise. * module/language/assembly/disassemble.scm (disassemble-load-program): Don't match unused list elements. * module/language/glil/decompile-assembly.scm (decompile-toplevel, decompile-load-program): Likewise. * module/system/xref.scm (program-callee-rev-vars): Likewise. * module/language/assembly/compile-bytecode.scm (write-bytecode)[write-sized-loader]: Remove. * module/language/assembly/decompile-bytecode.scm (decode-load-program): Factorize `pad' variables. * module/language/ecmascript/base.scm (object->value/string, object->value/number)[v]: Remove. * module/language/ecmascript/tokenize.scm (read-slash)[c0]: Remove. * module/language/objcode/spec.scm (decompile-value)[nargs]: Remove. * module/system/repl/command.scm (time)[vms-start, vms-end]: Remove. * module/system/repl/repl.scm (prompting-meta-read): Use `prompt'.
91 lines
3.1 KiB
Scheme
91 lines
3.1 KiB
Scheme
;;; Guile Lowlevel Intermediate Language
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;; Copyright (C) 2001, 2009 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (language objcode spec)
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#:use-module (system base language)
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#:use-module (system vm objcode)
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#:use-module (system vm program)
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#:export (objcode make-objcode-env))
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(define (make-objcode-env module externals)
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(cons module externals))
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(define (objcode-env-module env)
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(if env (car env) (current-module)))
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(define (objcode-env-externals env)
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(and env (vector? (cdr env)) (cdr env)))
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(define (objcode->value x e opts)
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(let ((thunk (make-program x #f (objcode-env-externals e))))
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(if e
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(save-module-excursion
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(lambda ()
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(set-current-module (objcode-env-module e))
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(values (thunk) #f e)))
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(values (thunk) #f e))))
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;; since locals are allocated on the stack and can have limited scope,
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;; in many cases we use one local for more than one lexical variable. so
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;; the returned locals set is a list, where element N of the list is
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;; itself a list of bindings for local variable N.
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(define (collapse-locals locs)
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(let lp ((ret '()) (locs locs))
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(if (null? locs)
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(map cdr (sort! ret
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(lambda (x y) (< (car x) (car y)))))
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(let ((b (car locs)))
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(cond
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((assv-ref ret (binding:index b))
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=> (lambda (bindings)
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(append! bindings (list b))
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(lp ret (cdr locs))))
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(else
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(lp (acons (binding:index b) (list b) ret)
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(cdr locs))))))))
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(define (decompile-value x env opts)
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(cond
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((program? x)
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(let ((objs (program-objects x))
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(meta (program-meta x))
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(free-vars (program-free-variables x))
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(binds (program-bindings x))
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(srcs (program-sources x)))
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(let ((blocs (and binds (collapse-locals binds))))
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(values (program-objcode x)
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`((objects . ,objs)
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(meta . ,(and meta (meta)))
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(free-vars . ,free-vars)
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(blocs . ,blocs)
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(sources . ,srcs))))))
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((objcode? x)
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(values x #f))
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(else
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(error "can't decompile ~A: not a program or objcode" x))))
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(define-language objcode
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#:title "Guile Object Code"
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#:version "0.3"
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#:reader #f
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#:printer write-objcode
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#:compilers `((value . ,objcode->value))
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#:decompilers `((value . ,decompile-value))
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)
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